package com.sjyy.common.util;

import java.security.MessageDigest;

public class MD5Util {
	public static String MD5(String plaintext, String key) {
		MessageDigest messageDigest = null;
		try {
			plaintext += key;
			messageDigest = MessageDigest.getInstance("MD5");
			messageDigest.reset();
			messageDigest.update(plaintext.getBytes("UTF-8"));
		} catch (Exception e) {
			e.printStackTrace();
			return "";
		}

		byte[] byteArray = messageDigest.digest();
		StringBuffer md5StrBuff = new StringBuffer();
		for (int i = 0; i < byteArray.length; i++) {
			if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)
				md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
			else
				md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
		}
		return md5StrBuff.toString();
	}
}
